Remove unnecessary uses of break_handle. (#5256)

In the first case, `array_schema` is an output parameter that has not
been yet allocated. In the second case, allocating the schema handle is
the last thing we do and the exception handler serves no purpose.

Thanks to @bekadavis9 for finding this.

---
TYPE: NO_HISTORY

Co-authored-by: Rebekah Davis <[email protected]>

Author: teo-tsirpanis

tiledb/sm/c_api/tiledb.cc

@@ -1672,7 +1672,6 @@ int32_t tiledb_array_get_schema(
   if (!st.ok()) {
     LOG_STATUS_NO_RETURN_VALUE(st);
     save_error(ctx, st);
-    tiledb_array_schema_t::break_handle(*array_schema);
     return TILEDB_ERR;
   }
   *array_schema = tiledb_array_schema_t::make_handle(array_schema_get.value());
@@ -2509,18 +2508,14 @@ int32_t tiledb_deserialize_array_schema(
   ensure_output_pointer_is_valid(array_schema);
 
   // Create array schema struct
-  try {
-    auto memory_tracker = ctx->resources().create_memory_tracker();
-    memory_tracker->set_type(sm::MemoryTrackerType::ARRAY_LOAD);
-    auto shared_schema = tiledb::sm::serialization::array_schema_deserialize(
-        (tiledb::sm::SerializationType)serialize_type,
-        buffer->buffer(),
-        memory_tracker);
-    *array_schema = tiledb_array_schema_t::make_handle(shared_schema);
-  } catch (...) {
-    tiledb_array_schema_t::break_handle(*array_schema);
-    throw;
-  }
+  auto memory_tracker = ctx->resources().create_memory_tracker();
+  memory_tracker->set_type(sm::MemoryTrackerType::ARRAY_LOAD);
+  auto shared_schema = tiledb::sm::serialization::array_schema_deserialize(
+      (tiledb::sm::SerializationType)serialize_type,
+      buffer->buffer(),
+      memory_tracker);
+
+  *array_schema = tiledb_array_schema_t::make_handle(shared_schema);
 
   return TILEDB_OK;
 }